ATLANTA — Baylor vs. Xavier is more than an undercard to the highly anticipated Kentucky-Indiana rematch.

The Bears and Musketeers have their own impressive résumés heading into their Sweet 16 matchup tonight in the South Regional.

Baylor, the No. 3 seed, is one win away from its second regional final in three years.

Xavier, the No. 10 seed, is playing in the round of 16 for the fourth time in five years. Only Kansas, Michigan State and North Carolina can also make that claim.

So excuse Xavier’s players for rolling their eyes yesterday when asked about being a mid-major school. And pardon Perry Jones III for pointing out that Baylor, like Kentucky, is aiming for the national championship.

“We’re playing for the national championship even though we’re not expected to win one,” Jones said. “We weren’t expected to be here now.”

A key for Xavier might be freshman forward Dezmine Wells, who suffered a sprained right big toe and played only eight minutes in Sunday’s 70-58 win over Lehigh.

Wells showed no sign of discomfort as he launched jump shots in practice, and coach Chris Mack said his status would be a game-time decision.

“I’m hopeful that he’ll give it a go,” Mack said. “I think he’s very hopeful that he’ll give it a go. But how effective he is will be another story.”

Another starter, forward Andre Walker, did not practice yesterday. Walker was hit on the head during a win over Notre Dame in the second round. He played only 20 minutes against Lehigh and should be available against Baylor, according to Mack.

“He has had some migraine headaches over the last couple of days,” Mack said. “It’s just smarter for us, especially with a fifth-year player who’s been through the rigors of college basketball and knows what the NCAA Tournament is all about, to just sort of stay back and continue to get rest so he can be able to go (tonight).”

Holloway said the Musketeers’ low seed only adds to their image as an underdog team from a mid-major conference.

“Sometimes I’m offended,” he said. “We’re still, quote, mid-majors, but we continue to have success against the major teams that we play against in the power conferences.”

Baylor (29-7) advanced to the round of 16 by beating Colorado 80-63 as Brady Heslip made 9 of 12 three-pointers for a career-high 27 points.

Heslip, who averages 10.3 points per game, knows he might draw more defensive attention from Xavier.

“I know they labeled me as a shooter — most teams do — so I’ve just got to do a good job coming off screens and getting open,” he said, adding that the key will be “finding my teammate when they’re open if their attention is on me.”

Heslip has Holloway’s attention.

“Any guy that can score 27 points in the NCAA Tournament without dribbling, he’s a really good player,” Holloway said.